. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE POSTEBTOB LIMBS 91 Fig. 57. row. The three first of the upper row articulate witli the radius; the fourth responds to the ulna. In the bones of the lower row, the trapezium responds to tlie metacarpal of the thumb and that of the indtx the trapezoides to the latter only, the os magnum and unciform to the metacarpals of the medius, annularis, and little finger. The pisiform bone and the cuneiform process of the unciform convert the posterior face of the carpus into a channel. 2, â Metacarpus.âThe five metacarpals of
. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE POSTEBTOB LIMBS 91 Fig. 57. row. The three first of the upper row articulate witli the radius; the fourth responds to the ulna. In the bones of the lower row, the trapezium responds to tlie metacarpal of the thumb and that of the indtx the trapezoides to the latter only, the os magnum and unciform to the metacarpals of the medius, annularis, and little finger. The pisiform bone and the cuneiform process of the unciform convert the posterior face of the carpus into a channel. 2, â Metacarpus.âThe five metacarpals of Man are parallel to each other, and articulate by their superior extremities with the bones of the oar- pus ; by their inferior extremities with the phalanges. They are all concave in their middle portion, and thickened at their ends. The metacarpal of the thumb is the shortest and strongest. The others diminish in volume from the fourth to the first. 3. Digital Begion.âHere we find five digits, each composed of three bony columnettes, witli tlie exception of the thumb, in which only the second and third pha- langes are present. They decrease in length from the third to tlie first, and the third to the fiftli. The first and second phalanges are small semicylindrical bones, slightly thickened at tlieir extremities. The ungueal phalanges are constricted in their middle, and widened like a horse-shoe at their inferior extremity; the palmar face is roughened, the dorsal face smooth. AbTICLB V, POSTEBIOB LiMBS. Each of tliese is divided, as already noted, into four secondary regions: the pelvis, thigh, leg, eeaifoot. PALMAR SURFACE OF LEFT HUMAN HAND. The pelvis is a kind of bony cavity formed by the union of the sacrum with two lateral ,, .j u no i V ,, 1-1 T1 i T -ii 1, bcaphoid bone: 2, bemuunar pieces, the coxse, which are-consolidated with 3, Cuneiform ⢠4- Pisifmm ⢠each other in the inferior median line. The description of the sacrum having been already give
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